Latest threads in Electronics Designshow only best voted threads
| Subject | Author | Posted | Replies | |
|---|---|---|---|---|
|
|
Test Equipment (Most needed)
We have scopes, DVMs, power supplies, and assorted equipment but a proper V/I meter would be a neat addition. Let's say it only has two I/O terminal pins that can be programmed, the current from 1.0...
—
|
8 years ago
|
— | |
|
|
Odd Vf
Today I measured Vf of 16 unmarked through hole diodes. I have no data on them at all, and as they're unmarked I suspect some may be seconds / out of spec. The results surprised me... Vf at 0.86mA:...
9
|
8 years ago
|
9 | |
|
|
MS more powerful than the FBI
See: The FBI would need a warrant for this, but not MS. It's now easy to understand why they are giving away a major upgrade (to Windows 10) for free. "Everything that is said into an enabled...
22
|
8 years ago
|
22 | |
|
|
Win8 Networking is Down
I've been having problems lately where my internet connection would go bad after a day or so. I would reset the connecting using the commands netsh winsock reset catalog netsh int ip reset c: eset.log...
41
|
8 years ago
|
41 | |
|
|
LED string - does it matter where the resistor is?
powering a string of three leds with a current limiting resistor - can I go LED - R - LED - LED ?
1
|
8 years ago
|
1 | |
|
|
Semi manufacturer takeover - do parts change?
A product has been using the HEF4060B for the last two or three decades without issue. But the last batch have issues with the oscillator starting reliably at the correct frequency (32767Hz xtal) The...
14
|
8 years ago
|
14 | |
|
|
Car ignition lock + arduino
Did someone try to connect arduino to standard car ignition lock ? I just want to check if the car is turned on or not. Would some step down converter + one GPIO do the trick or do i need do use relay...
2
|
8 years ago
|
2 | |
|
|
Motion detection sensor + fuel tank
Hi to all. I need to implement one motion detection sensor near fuel tank. The only thing that I am worried about is security. Ok, maybe this would be dumb question for someone but what a heck... The...
4
|
8 years ago
|
4 | |
|
|
Re: The cellphone paradox - where are all the accidents?
You have to realize what you just intimated. Bear in mind, it's the PARADOX that we're trying to resolve. If distracted driving statistics were reliable (they're not), then the paradox is EVEN WORSE!...
35
|
8 years ago
|
35 | |
|
|
Universal tester, puzzled
This place again... I don't see how its supposed to work at all. Do you? NT
4
|
8 years ago
|
4 | |
|
|
PIR module circuit
Could some electronics guru please help ? Standard PIR modules (e.g., BS1600 or BS1700) are somewhat expensive for what they do. Could someone please direct me to a circuit diagram for any of these...
1
|
8 years ago
|
1 | |
|
|
LCD cleaning
Hi, I've always advocated "100 proof"[1] alcohol and a microfiber rag to clean LCD monitors. Is there a commercial product (that doesn't have silly additives, dyes, etc.) that I can recommend to a...
66
|
8 years ago
|
66 | |
|
|
opamp thermal errors
Opamps usually have specs for Vos, Vos tempco, Theta-ja, and max power dissipation. But nobody seems to talk about input offset as a function of power dissipation. The concern here is thermoelectrics...
26
|
8 years ago
|
26 | |
|
|
Adjustable AC power supply
An adjustable 30V AC power supply sounded like a cool thing to have on the bench, so I decided to throw together figure 3 on this web page: I used a few junk box substitutions for the BC550B and the...
7
|
8 years ago
|
7 | |
|
|
LTspice simulation is taking too long to run
Greetings people ! So lately, I have been working on my Sigma Delta ADC and before going advan ce, I wanted to have a base model WORKING (1ST ORDER, 3 bit digital output) . The circuit is quite...
11
|
8 years ago
|
11 |